* <td>The ability to use the HTTP TRACE method in HttpURLConnection. * <td>Malicious code using HTTP TRACE could get access to security sensitive * information in the HTTP headers (such as cookies) that it might not * otherwise have access to.</td> * </tr> * * <tr> * <td>getCookieHandler * <td>The ability to get the cookie handler that processes highly * security sensitive cookie information for an Http session.</td> * <td>Malicious code can get a cookie handler to obtain access to * highly security sensitive cookie information. Some web servers * use cookies to save user private information such as access * control information, or to track user browsing habit.</td> * </tr> * * <tr> * <td>getNetworkInformation * <td>The ability to retrieve all information about local network interfaces. * <td>Malicious code can read information about network hardware such as * MAC addresses, which could be used to construct local IPv6 addresses.</td> * </tr> * * <tr> * <td>getProxySelector * <td>The ability to get the proxy selector used to make decisions * on which proxies to use when making network connections.</td> * <td>Malicious code can get a ProxySelector to discover proxy * hosts and ports on internal networks, which could then become * targets for attack.</td> * </tr> * * <tr> * <td>getResponseCache * <td>The ability to get the response cache that provides * access to a local response cache.</td> * <td>Malicious code getting access to the local response cache * could access security sensitive information.</td> * </tr> * * <tr> * <td>requestPasswordAuthentication * <td>The ability * to ask the authenticator registered with the system for * a password</td> * <td>Malicious code may steal this password. * </tr> * * <tr> * <td>setCookieHandler * <td>The ability to set the cookie handler that processes highly * security sensitive cookie information for an Http session.</td> * <td>Malicious code can set a cookie handler to obtain access to * highly security sensitive cookie information. Some web servers * use cookies to save user private information such as access * control information, or to track user browsing habit.</td> * </tr> * * <tr> * <td>setDefaultAuthenticator * <td>The ability to set the * way authentication information is retrieved when * a proxy or HTTP server asks for authentication</td> * <td>Malicious * code can set an authenticator that monitors and steals user * authentication input as it retrieves the input from the user.</td> * </tr> * * <tr> * <td>setProxySelector * <td>The ability to set the proxy selector used to make decisions * on which proxies to use when making network connections.</td> * <td>Malicious code can set a ProxySelector that directs network * traffic to an arbitrary network host.</td> * </tr> * * <tr> * <td>setResponseCache * <td>The ability to set the response cache that provides access to * a local response cache.</td> * <td>Malicious code getting access to the local response cache * could access security sensitive information, or create false * entries in the response cache.</td> * </tr> * * <tr> * <td>specifyStreamHandler * <td>The ability * to specify a stream handler when constructing a URL</td> * <td>Malicious code may create a URL with resources that it would normally not have access to (like file:/foo/fum/), specifying a stream handler that gets the actual bytes from someplace it does have access to. Thus it might be able to trick the system into creating a ProtectionDomain/CodeSource for a class even though that class really didn't come from that location.</td> * </tr> * </table> * * @see java.security.BasicPermission * @see java.security.Permission * @see java.security.Permissions * @see java.security.PermissionCollection * @see java.lang.SecurityManager * * * @author Marianne Mueller * @author Roland Schemers */ public final class NetPermission extends BasicPermission { private static final long serialVersionUID = -8343910153355041693L; /** * Creates a new NetPermission with the specified name. * The name is the symbolic name of the NetPermission, such as * "setDefaultAuthenticator", etc. An asterisk * may appear at the end of the name, following a ".", or by itself, to * signify a wildcard match. * * @param name the name of the NetPermission. * * @throws NullPointerException if {@code name} is {@code null}. * @throws IllegalArgumentException if {@code name} is empty. */ public NetPermission(String name) { super(name); } /** * Creates a new NetPermission object with the specified name. * The name is the symbolic name of the NetPermission, and the * actions String is currently unused and should be null. * * @param name the name of the NetPermission. * @param actions should be null. * * @throws NullPointerException if {@code name} is {@code null}. * @throws IllegalArgumentException if {@code name} is empty. */ public NetPermission(String name, String actions) { super(name, actions); } }

Java example source code file (NetPermission.java) This example Java source code file (NetPermission.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM. Learn more about this Java project at its project page. Java - Java tags/keywords basicpermission, netpermission, security, string, util The NetPermission.java Java example source code /* * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package java.net; import java.security.*; import java.util.Enumeration; import java.util.Hashtable; import java.util.StringTokenizer; /** * This class is for various network permissions. * A NetPermission contains a name (also referred to as a "target name") but * no actions list; you either have the named permission * or you don't. * <P> * The target name is the name of the network permission (see below). The naming * convention follows the hierarchical property naming convention. * Also, an asterisk * may appear at the end of the name, following a ".", or by itself, to * signify a wildcard match. For example: "foo.*" and "*" signify a wildcard * match, while "*foo" and "a*b" do not. * <P> * The following table lists all the possible NetPermission target names, * and for each provides a description of what the permission allows * and a discussion of the risks of granting code the permission. * * <table border=1 cellpadding=5 summary="Permission target name, what the permission allows, and associated risks"> * <tr> * <th>Permission Target Name * <th>What the Permission Allows * <th>Risks of Allowing this Permission * </tr> * <tr> * <td>allowHttpTrace

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